placeholder · manufacturer · aceelectromagnetics.comStatic Compensators (STATCOM)
A STATCOM (Static Synchronous Compensator) is a shunt-connected FACTS device that uses an IGBT voltage-source converter to generate a controllable three-phase voltage in phase with the AC system.
Overview
A STATCOM (Static Synchronous Compensator) is a shunt-connected FACTS device that uses an IGBT voltage-source converter to generate a controllable three-phase voltage in phase with the AC system. By making its internal voltage higher or lower than the grid voltage it supplies (capacitive) or absorbs (inductive) reactive power (VARs) almost instantly, regulating the voltage at the point of connection. Its control is extremely fast, dynamically changing the magnitude and phase of the generated voltage in milliseconds. Buyers choose a STATCOM for dynamic reactive-power compensation, voltage stabilisation, flicker control and power-quality correction on rapidly fluctuating loads where conventional capacitor banks are too slow. (Existing site introduction describes exactly this VSC principle.)
Specifications
| Topology | IGBT voltage-source converter (VSC), shunt-connected (existing site) |
|---|---|
| Function | supplies VARs when internal V > terminal V (capacitive); absorbs VARs when V < terminal V (inductive) (existing site) |
| Reactive power range | capacitive/inductive, typical industrial range hundreds of kVAr to multi-MVAr |
| Response time | very fast — typically < 2 cycles (milliseconds) (existing site: 'extremely fast') |
| Output | continuously variable reactive current |
| Voltage class | LV/MV (e.g. 415 V LV up to MV with step-up transformer) |
| Frequency | 50 Hz / 60 Hz |
| Functions | voltage regulation, flicker mitigation, harmonic/power-quality support, load balancing |
| Cooling | air or liquid cooled depending on rating |
| Applicable standards | IEEE-1052 (STATCOM systems), IEEE-519, IEC 61000 class |
Applications
- Dynamic voltage regulation at point of common coupling
- Flicker control for arc furnaces, welding and rolling mills
- Reactive-power compensation for fluctuating industrial loads
- Grid / renewable integration voltage support
- Power-quality improvement and load balancing
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